这里需(xū )要说(shuō )明(míng )的是,在我们系(xì )统里(lǐ )面如果(guǒ )单独(dú )设置一个子域名解析(xī ),比(bǐ )如(rú )将主机(jī )名(míng )设置为mail,单独(dú )解(jiě )析到9,那么该(gāi )解(jiě )析记录优先泛(fàn )域名在实际使(shǐ )用中作用是(shì )非常广(guǎng )泛(fàn )的,比(bǐ )如(rú )实(shí )现无限二级域名功能,提供(gòng )免(miǎn )费的url转(zhuǎn )发,在
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